Rework radial disc profile

[codecov-commenter]

Codecov Report

Merging #154 (6dfb8d5) into main (38e92c1) will increase coverage by 0.21%. The diff coverage is 87.50%.

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@@            Coverage Diff             @@
##             main     #154      +/-   ##
==========================================
+ Coverage   68.94%   69.16%   +0.21%     
==========================================
  Files          60       61       +1     
  Lines        2634     2633       -1     
==========================================
+ Hits         1816     1821       +5     
+ Misses        818      812       -6     

Files Changed	Coverage Δ
src/corona/profiles/voronoi.jl	69.36% <ø> (+3.55%)	:arrow_up:
src/corona/disc-profiles.jl	66.66% <66.66%> (+33.33%)	:arrow_up:
src/corona/profiles/radial.jl	85.96% <75.00%> (-4.95%)	:arrow_down:
src/corona/profiles/analytic.jl	100.00% <100.00%> (ø)
src/transfer-functions/integration.jl	94.23% <100.00%> (+0.03%)	:arrow_up:
src/transfer-functions/transfer-functions-2d.jl	80.30% <100.00%> (-0.86%)	:arrow_down:
src/utils.jl	34.54% <100.00%> (+5.13%)	:arrow_up: